Bug #66069 [Opn->Nab]: UTF8 problem with substr

Edit report at https://bugs.php.net/bug.php?id=66069&edit=1 ID: 66069 Updated by: requinix@php.net Reported by: p dot danesh at afagh dot info Summary: UTF8 problem with substr -Status: Open +Status: Not a bug Type: Bug Package: *General Issues Operating System: LINUX PHP Version: 5.5.5 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php substr() works with bytes, not logical characters. If you use it with a string in a multibyte encoding then you might accidentally cut it off in the middle of a byte sequence. Which is what happened for you. Don't use substr() for a UTF-8 string. Previous Comments: ------------------------------------------------------------------------ [2013-11-08 23:11:08] p dot danesh at afagh dot info Description: ------------ --- From manual page: http://www.php.net/function.substr --- Hello, in UTF8 string , when we use substr , one character "�" seen at end of output. we dont have problem in mb_substr. Test script: --------------- $str="نمونه متن ساده جهت برش توسط تابع ساب اس تی آر در پی اچ پی"; echo substr($str ,0 ,28); Expected result: ---------------- نمونه متن ساده � ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66069&edit=1